The statement that best describes the types of bonds shown in the diagram is:
A. a covalent bond; the hydrogen atom’s single electron is being shared with the chlorine atom.
In a hydrogen chloride (HCl) molecule, hydrogen and chlorine share a pair of electrons, forming a covalent bond. The description indicates that the hydrogen atom has a single electron, which it shares with the chlorine atom, thus forming the covalent bond between them.